Steam app 3211850 · updated 12 Sep 2026, 20:48 UTC
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
716 hourly samples, with the daily peak drawn over them. Weekends are shaded.
9 months, January 2026 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 434 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 282 hourly samples. Each dip is a night. Weekends are shaded.
Calyx was released on 29 Jan, 2026.
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A blank audio cell means full audio was not marked in the returned language list.
33 developer announcements, Jan 2025 to Aug 2026 · times in UTC
Greetings Calyx players!Today we’re sharing some of our progress on the next major update to the game. Prepare for take-offWe’re adding airborne Calyx and player units so you can bring the battle to the skies. See below for a sneak peek at…
Studio568Greetings Calyx players!Calyx v0.2.0.4 – Leviathan Update, Minor PatchHi everyone! We've got another small patch today, bringing the following changes:Added different models for the different types of marine crawlersFixed an issue where the…
Patch notesGreetings Calyx players!Calyx v0.2.0.3 – Leviathan Update PatchWe'd like to say a massive thanks to all the players who've given us feedback on the new update via Discord and the Steam Forum.We've now published a patch with the following…
Patch notesGreetings Calyx players!We're delighted to announce that Calyx v0.2: Leviathan Update is now available to install. This brings the next chapter of the campaign, naval units to build, and a new ocean biome to explore.The Leviathan regionA…
Studio568Greetings Calyx players!We're excited to invite you to take an early look at our upcoming Leviathan Update, including a new ocean biome, the Comet and Broadside fighting ships, the Ark naval transport, and the new Fathom species of…
Studio568Hot fix for two small issues: Fix default skirmish seed codes not producing correct layouts Fix challenges missing events
Patch notesShips Ahoy! Calyx Development Update – April 2026Greetings Calyx players!As we said back in March, we’re currently working on a larger update to Calyx, and we’re pleased to be able to share some details of that today. Water, water…
Studio568Fix for upgrading buildings past maximum level when using multi-select.
Patch notesCalyx v0.1.0.2 – Isotopes, Modules, Skirmish improvements and moreGreetings Calyx players!We’re delighted to share our first larger update since the Early Access launch of Calyx on 29th January. It’s been brilliant to see so many of you…
Studio568Fixed a rare hang when saving game
Patch notesCalyx v0.0.6.5 updateGreetings Calyx players! It's now been 2 weeks since the Early Access launch, and we'd like to once again thank everyone for their feedback and bug reports. This patch includes the following changes:More forgiving rules…
Patch notesMore forgiving rules for the "lose structures" objective - e.g. you can bulldoze deploying strutures, and we allow upgrading / replacing existing structures. A fix for an issue where your pop cap wasn't returned when cancelling an Orbital…
Patch notesCalyx v0.0.6.4 updateCampaign autosave being overwrittenWe became aware of an issue where your Campaign autosave progress could be overwritten by a save from another mode.If you never made a manual save in Campaign and you've continued to…
Patch notesSeparated campaign auto saves from skirmish/challenge auto saves Added "Reset All Research" to campaign tech tree Fix for a crash when buildings near map edge are attacked Hide save game in tutorial (where save is not allowed) Fix skirmish…
Patch notesSpot fixes: Fixed HUD layout issue Fixed crash when ordering units to the edge of the map Fixed power grid spilling over edge of the map Fixed impossible challenge objectives
Patch notesGreetings Calyx players!We’re thrilled to announce that the Early Access version of Calyx is now available.This first official version of the game includes:Part one of the campaign:Uncover the secrets of the mysterious Avaris…
Studio568Try the new campaign now!You can now install or update the Calyx demo and play the first section of the brand new campaign.Calyx will release into Early Access on Thursday 29th January 2026, but we've uploaded the updated version of the…
Studio568We’re excited to announce that the Early Access version of Calyx is coming to Steam on 29th January 2026.This first official release will include:Part one of the campaignUncover the secrets of the mysterious Avaris Corporation:Tutorial plus…
Studio568Jump in now for a first look!We're excited to invite you to play the first section of the upcoming Calyx Early Access campaign. This playtest, and the survey is in English only. The build will be available to play until 18:00 UK on Monday…
Studio568Greetings Calyx players!We’re now working hard on the Early Access release of Calyx. Here’s an update on some of the new content that’s coming.CampaignWe continue the story of the demo, as you and your empathy deficient AI attempt to…
Studio568Calyx Demo v0.0.4.3Hey everyone! 👋 We pushed a patch to address a couple of issues:Upgraded Unreal Engine version to 5.6.1 with the aim of fixing DirectX related crashes on start up which were affecting some PCs.Fixed an issue related to…
Patch notesGreetings Calyx players!We’re thrilled to announce that version 3 of the Calyx Demo is now live!There are lots of new things to try out, including:- 6 new Challenge maps.- Events system - for example, a sandstorm that reduces solar power…
Studio568Greetings Calyx players!We’re thrilled to say that over 60,000 of you now have the Calyx Demo installed.It’s now time for an update on what we’re planning next.Here are some of the things we’re working on…Events system – changing situations…
Studio568Greetings Calyx players!We’re excited to announce that version 2 of the Calyx Demo is now live!There are lots of new things to try out, including:- Challenge Mode with 5 new maps.- New Calyx plants with new mechanics - watch out for the…
Studio568Greetings Calyx players! Our playtest for version 2 of the Calyx Demo is now open. If you already requested access, you should now have the "Calyx Playtest" product in your Steam Library. To request access now, visit the main Calyx Steam…
Studio568Sign up in advance Visit the Calyx Steam Page, scroll down and hit the “Request Access” button. {STEAM_CLAN_IMAGE}/45409241/94ecf7026dcc217202375b7a7f301853396bf365.png “When can I play?” When the playtest is available we’ll publish another…
Studio568Greetings Calyx players! We’re delighted to say that more than 35,000 of you have now added the Calyx Demo to your library, since we first launched it for Steam’s RTS Fest on January 20th. Thanks for all your detailed suggestions and…
Studio568Big thanks from the Studio 568 team! We're thrilled that so many of you played Calyx over the RTS Fest period, left reviews and gave us feedback in the Discussion Forum. It's exciting that so many of you see potential in the Demo, and it's…
Studio568Added Skirmish as an option on the main menu. This allows you to configure options before playing the demo map: Number of Calyx Roots Number of Ore locations Difficulty, from Very Easy to Impossible Note, this is not us responding to any of…
Patch notesFrame rate cap & motion blur options Added settings for: Frame rate cap Motion blur These are in the options dialogue - if you've seen the game maxing out your GPU, you can now impose a framerate cap. We also made some minor UI and audio…
Patch notesUpdated music Some YouTubers got in touch to say they've been receiving copyright violation notifications when monetisation is enabled on their videos of Calyx. Although the music we used in v0.0.2.0 was Creative Commons licensed for…
Patch notesWe're stoked to announce you can now install and play the Calyx Demo. {STEAM_CLAN_IMAGE}/45409241/0409ec42ef240a3edc03c8da99967ebab0675475.png A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost…
Studio568Our demo is almost here! A quick note to say we're putting the final touches to the Calyx demo and hope to share it with you very soon. Our aim is to have the demo live in time for Steam's RTS Fest event which starts on Monday 20th January.…
Studio568What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | Calyx.exe | windows 64 |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocal | Calyx/Saved/SaveGames/{64BitSteamID} | *.sav |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG